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A table is sold at a profit of 13%. If it is sold for $ 25 more, profit is 18 %. Cost price of table is
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- $ 100
- $ 500
- $ 200
- $ 1, 000
Correct Option: B
Let Cost price of table = $ y
We know that ,
| S. P. at R% profit = | × C.P. | 100 |
According to question,
| ∴ | + 25 = | % | 100 | 100 |
| ⇒ | - | = 25 | 100 | 100 |
| ⇒ | = 25 ⇒ | = 25 | 100 | 20 |
⇒ y = 25 × 20 = $ 500
We can find required answer with the help of given formula :
Here, a = 13%, and R = $ 25, b = 18%
| C.P. of table = |  | R |  | × 100 | ||
| b - a |
| C.P. of table = | | | × 100 | |||
| 18 - 13 |
| C.P. of table = | × 100 = $ 500 | 5 |
